Surface Tension of Heavy Water

Abstract

SELWOOD and Frost¹ obtained for mixtures of varying proportions of ordinary and heavy water different values of surface tension, the surface tension becoming smaller as the D₂O concentration increased. These authors compute by extrapolation that pure heavy water has a surface tension of 67.8 dyn./cm. at 20° C. No other data can be found hi literature, especially no direct measurements of surface tension of pure heavy water.